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Finding the Fourth Proportional to 608,673.40, 913,010.10 and 209,278.60

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Solution

The fourth proportional to 608,673.40, 913,010.10 and 209,278.60 is: 313,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,673.40 : 913,010.10 = 209,278.60 : x
  2. Step 2: Convert to fraction form
    608,673.40/913,010.10 = 209,278.60/x
  3. Step 3: Cross multiply
    608,673.40x = 913,010.10 × 209,278.60
  4. Step 4: Simplify right side
    608,673.40x = 191,073,475,513.86
  5. Step 5: Solve for x
    x = 191,073,475,513.86/608,673.40
  6. Step 6: Final answer
    x = 313,917.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.